As a writer, you can't allow yourself the luxury of being discouraged and giving up when you are rejected, either by agents or publishers. You absolutely must plow forward. Augusten Burroughs
It is not good when people no longer believe in war. Pretty soon they no longer believe in many other things which they absolutely must believe in if they are to be decent men. Thomas Mann
We absolutely must leave room for doubt or there is no progress and no learning. There is no learning without having to pose a question. And a question requires doubt. People search for certainty. But there is no certainty. People are terrified - how can you live and not know? Richard Feynman